404252005 has 16 divisors (see below), whose sum is σ = 498932784. Its totient is φ = 314245120.

The previous prime is 404251957. The next prime is 404252053. The reversal of 404252005 is 500252404.

It is an interprime number because it is at equal distance from previous prime (404251957) and next prime (404252053).

It can be written as a sum of positive squares in 8 ways, for example, as 804609 + 403447396 = 897^2 + 20086^2 .

It is not a de Polignac number, because 404252005 - 2²¹ = 402154853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48849 + ... + 56521.

It is an arithmetic number, because the mean of its divisors is an integer number (31183299).

Almost surely, 2^404252005 is an apocalyptic number.

It is an amenable number.

404252005 is a deficient number, since it is larger than the sum of its proper divisors (94680779).

404252005 is a wasteful number, since it uses less digits than its factorization.

404252005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 404252005 is about 20106.0191236356. The cubic root of 404252005 is about 739.4078565866.

The spelling of 404252005 in words is "four hundred four million, two hundred fifty-two thousand, five".